TEL AFA4000/E, Installation And Operating Manual

Page: 156 / 210

AFA4000/E VAV Airflow Controller / p.156
Parameter Description Range
Sash Width Enter the internal Fume Cupboard width 0-7000 mm
Sash Gap Volumetric Output volume range for 0-10
Vdc 0-1000 mm
Max Volume Enter the maximum fume cupboard
volume or required range 1 to 1000 l/sec
5. Select Sash Width , then use the
↑
and
↓
arrows to enter the measured internal width. Press
Mute . (Default value: 0 – 1200 mm).
6. Select Sash Gap , then use the
↑
and
↓
arrows to enter the measured gap value. Press Mute .
(Default value: 25 mm). (for example, the gap between the sash and soffit panel (e.g. 25
mm)).
7. Select Max Volume , then use the
↑
and
↓
arrows to adjust the value so the volumetric
output range is equal to the required fume cupboard volume range. Press Mute . (Default
value: 1000 l/sec). Select Done and Run . For example, setting the Max Volume 1000 l/sec
will give 10 Vdc @ 10,000 l/sec, setting the Max Volume to 500 l/sec will give 10 Vdc @ 500
l/sec etc.
8.5.4.1 Calibration
Once the settings described above have been entered, the sash position sensor must be
calibrated:
1. Navigate to Main Menu > Set up Monitor > Calibration .
Note: The Calibration menu is password protected. The default password is 0 0 0 0.
2. Select Sash Position Sensor .
3. Follow the on-screen instructions to move the sash to the first position (normal working
height, approximately 500 mm).
4. Use the
↑
and
↓
arrows to enter the sash height. Press Mute .
5. Follow the on-screen instructions to lower the sash to the second position (approximately
half way, 250 mm).
6. Use the
↑
and
↓
arrows to enter the sash height. Press Mute .
Select Done , followed by Run .
8.5.4.2 Testing
When the sash position sensor has been calibrated, and the extract fan is running, the measured
volume will display in the Diagnostics Menu I/O Status
– Sensor Data screen (section 13.2).